TAGS:

ruby  rails  migration  database 

Related:

• Adding fields to table via migration.
• Creating migration file using generate migration
• Creating migration file using scaffold.
• Drop tables using migration.
• Editing migration file manually.</li>
• Seeding data into tables via migration.
• Joining two tables via migration.
• Migration specific VERSION or STEP.
• Removing fields from tables via migration.
• Setting rails environment via migration command.
• Setup, reset and drop database
</ul>


Creating Migration File Via Generating Rails Model.

Generating model will create a migration file to create its table as

rails generate model book title brief:text

This will generate a new file in db/migrate/(date-time stamp)_create_books.rb. Then, Apply changes to database using:

rake db:migrate

Note that you can undo this migration using:

rake db:rollback

Take a look to this tutorial video: